For the past . . however many years . . I've been using the Palemoon browser, had no problems until a few months ago when it stopped blocking the Youtube ads . . apparently, although it's Firefox derived, it now doesn't support the adblockers that 'used' to work so well . .
so today I installed Vivaldi (similar to Brave I think) which blocks the damn lot with no questions. Bookmarks easily imported, Palemoon now on the back burner waiting for an uninstall